you can only import binary registry files

Lastly, you may not even be able to import back the entire registry because a lot of keys will be in use by Windows and therefore simply won’t be written. This can actually lead more problems and possible corruption. Secondly, if you’re only changing one setting, trying to import back the entire registry later on may overwrite many other newer values that were written to other parts of the registry after the export. Firstly, you’re going to get a large file that you have to store somewhere. There is a way to export the entire registry, but that’s not a good option for several reasons. When you make a change to the registry, it’s always a good idea to create a restore point and then backup the edited section of the registry also. In terms of backing up the registry, you really have two options: backup parts of the registry manually via export or backup the entire registry using System Restore. You don’t really need to understand that level of detail, but hopefully you understand the structure of the registry. Also, values can store data of different types including String, Binary, DWORD, QWORD, and more.

You can only import binary registry files